Access to the place
Hiking to the start 2'
Take the narrow path that runs alongside the road and drops down to cross the old bridge. Cross it and head for the wall, slightly to the left. The sloping start is easy to recognize with the topo, but the 1st point is very high (12 to 15m).
The route is 160m in 4 pitches (50m, 50m, 30m, 30m), fully equipped (bolts, stone bridges, pitons). A 2x60m and a dozen quickdraws are required.
L1 (50m, V)
The 1st point is easily reached on a slightly sloping wall with small steps. The rest is easy, but there are 2 more vertical passages to negotiate. The route runs diagonally upwards on the left, passing between 2 boulders, then becoming more crumbly and ending up in grass and shrubs. There's a lot of friction on the rope! The R1 belay is very comfortable and is on the left after a strap-equipped sabine and at the foot of a vertical slab.
L2 (50m, 6a)
This is a beautiful pitch that verticalizes in the middle to finish in the middle of the wall. You have to zig-zag to find the best holds, which are straightforward. Halfway through the pitch, after a traverse to the right, there's a V+ passage, then even higher up, and just before the belay, the 6a pitch (better negotiated on the right). A sling is used to switch to A0 if necessary. The R2 belay is less comfortable, narrow and airy. We then find ourselves under a large dihedral.
L3 (30m, V+)
A very vertical start before reaching the base of the dihedral. At this point, the line of nails makes a right turn and you can't (at the head) continue up the dihedral. The passage is difficult and could be worth 6a (or maybe I've negotiated it wrong!). Follow the crack and return to the dihedral to finish in an easier V. The R3 belay is above on a flat area.
L4 (30m, IV+)
Easy length with very few nails. 2 small walls easy to surmount and you follow the ridge. The R4 belay can be done on a point to avoid too much friction. The length is of little climbing interest, but the view is splendid!
Continue along the ridge without difficulty to reach the 2nd part of the via ferrata. Finish off with a few extra rungs and pulls, just in case the route isn't enough (!), all the way to the summit. From the viewpoint, descend to the village and turn right just before the church. Follow the signs and take the GR winding down to the bridge (25′). On the other side of the bridge, following the cables to the right, you'll come to a very aerial suspension bridge which is under construction for a continuation of the défilé...?